access evolution 211014 1420 paul-spruyt
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7/17/2019 Access Evolution 211014 1420 Paul-Spruyt
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COPYRIGHT © 2014 ALCATEL-LUCENT. ALL RIGHTS RESERVED.
1
CONNECTING PEOPLE AT THE SPEED OF LIGHT … USING C
Paul Spruyt, DSL Strategist, Alcatel-Lucent21 October, 2014
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2
VECTORING IS ON THE RISEHELPS OPERATORS GET MORE FROM THEIR DSL COPPER NETWOR
12
2011
6
2012
9
2012
12
2012
3
2013
6
2013
9
2013
12
2013
3
2014
6
2014
9
2014
12
201
25+VECTORINGCUSTOMERS
65+VECTORING
TRIALS
3
2012
BBWF 2012
6 CUSTOMER
20+ TRIALS
90K VECTORING LINES
BBWF 2013
17 CUSTOMER
55+ TRIALS
2.4M VECTORING LINES
BBWF 2014
1st nationwide VDSL2vectoring activation
connects 1st userwith VDSL2 vectoring
ALU 1st to announcevectoring product
9
2011
ADSLsince B 1998
VDSL2since M 2005
Vectoringsince E 2011
ALCATEL-LUCENT SHIPMENTS [MIO LINES]
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3
G.FAST GIVES HUNDREDS OF MBIT/S OVER LEGACY TWISTED PALSO WORKS ON COAX
G.fast on twisted pair in overlay with VDSL2 17a G.fast equally works o
G.fast end frequ configured avoid interference with C
Source: BT Labs in cooperation with ALU Source: test by ALU in operato
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4
G.FAST ALLOWS FOR END-USER SELF-INSTALLATIONSOME (MODEST) BIT RATE LOSS IN CASE OF BRIDGED TAPS IN-HO
Bit rate loss may increase if mul
bri
100m
Source: ChuangHwa Telecom Labs (CHT-TL) in cooperation with ALU
BT length DS loss US
no 0%
20m -6%
10m -6%
2m -13%
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5
G.FAST ALLOWS CO-EXISTENCE WITH VDSL2 AND RADIO SERV
ITU-T G.9700 specifies power spectral density
(PSD) mask requirements for G.fast and a set
of tools to reduce the transmit PSD mask for
compliance with:
• Regional requirements
• Operator requirements e.g. spectrum
compatibility and coexistence with other xDSL
access and home network technologies
• Radio services
• EMC requirements
DS bit rate loss due to skippin(e.g. 558 Mb/s 500 Mb/s)
G.fast start frequency (e.g.
23 MHz) for compatibility
with VDSL2 in same cable
E.g. spectra
masking for
radio bandsSource (PSD figure): BT Labs in cooperation with ALU
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G.FAST OFFERS CONTROL OVER UP/DOWN BIT RATE RATIO
G.fast makes use of Time Divisi
allowing a flexible configuratioupstream / downstream ratio
All G.fast lines in the same cab
synchronized, with the same up
• In presence of crosstalk
DS D
MTDD frame
(e.g. 750s)
USUS
Source (bit rate figure): Orange Labs in cooperation with ALU
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652 MBit/s US+DS TRAFFIC(74m in-house cable)
Source: A1 in cooperation with ALU
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ULTRA-BROADBAND TECHNOLOGY OPTIONS – THE GAP
800 7006005004003002001000DISTANCE [m]
FTTNVDSL2 Vectoring (17a)
FTTdp MULTI-USER(G.fast)
FTTdp SINGLE USER(G.fast)
FTTHCOST
~1Gb/s @ 50m (1
)
1Gb/s (1)
~500Mb/s @ 100m (1)
~100Mb/s @
GAP
(1) All rates mentioned are aggregate US+DS
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ULTRA-BROADBAND TECHNOLOGY OPTIONS – VPLUS
800 7006005004003002001000DISTANCE [m]
FTTNVDSL2 Vectoring (17a)
FTTdp MULTI-USER(G.fast)
FTTdp SINGLE USER(G.fast)
FTTH
~200Mb/s+ @ 400m (1)
FTTx
Vplus
COST DENSE• Up to 200
• Matches m
cabinets
LONG REAC• Bit rate ga
• 17a perfor
loops
COST-OPTIM• High densi
G.fast)
HIGH SPEED• 200-300Mb
~1Gb/s @ 50m (1
)
1Gb/s (1)
~500Mb/s @ 100m (1)
~100Mb/s @
(1) All rates mentioned are aggregate US+DS
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VPLUS FILLS THE GAP BETWEEN VDSL2 AND G.FASTVPLUS ALLOWS MIXED VECTORING WITH VDSL2 17A (VDSL2 30A D
VDSL2Most co
for 100
G.FAST100s of Mb/s at very short distan
(Performance shown for 23-106M
VplusCan be mixed with existin
Up to 300+Mb/s, 200Mb/s
Longer reach and higher
Cost optimized
FREQUENCY SPECTRUM
30MHz25kHz 17.6MHz
Different tone spacingVectoring not possible
Same tone spacing
Vectoring possible
4.3kHz
8.6kHz
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0
2000
4000
6000
8000
10000
0 100 200 300 400 500 600 700 800 90
10Gbps @ 30m
10.1Gbps over 2 pairs
500MHz of frequency spectrum
WHAT’S NEXT – BELL LABS’ XG-FAST SETS NEW SPEED RECOR
Distance [m]
A g g r
e g a t e b i t r a t e [ M b / s ]
1G Symmetrical @ 70m
2Gbps over a single pair350MHz frequency spectrum
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CONCLUSION
VDSL2 VECTORING IS ON THE RISE• Fast to market and competitive, VDSL2 vectoring helps operators get more from
DSL copper networks
G.FAST IS NEXT• 12 trials with operators, 8 more planned in 2014 ; first product in 1Q 2015
V.PLUS CAN FILL THE GAP BETWEEN VDSL2 AND G.FAST• 200-300 Mb/s, compatible with 17a, dense, cost optimized, matches FTTN/cur
MORE TO COME• Bell Labs demonstrated 2Gb/s and 10 Gb/s over short copper
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